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Micro-Controller Lab Test-C
Q1. Choose correct option in following questions.
 (i) A micro-controller has which of the following devices on chip?
(a) RAM               (b) ROM             (c) I/O Devices        (d) All of the above

(ii) The 8051 has ________ 16-bit counter/timers.
(a) 1                                 (b) 2                              (c) 3                                       (d) 4

(iii) The following command will copy the accumulator to the location whose address is 23H:
(a)True                           (b) False                         (c) Can not Say                      (d) none

(iv) Which of the following commands will copy the contents of location 4H to the accumulator?
(a) MOV A, 04H           (b) MOV A, L4     (c) MOV L4, A            (d) MOV 04H, A 

 (v) Registers ACC and B are ----bits wide?
(a) 8                                  (b) 16                           (c) 32                                    (d) 4

(vi) Which of the following is illegal?
(a) MOV R3, #50            (b) MOV R1, #50        (c) MOV R8, #50                  (d) None

(vii) JNZ refers to?
(a) Jump if accumulator is not zero (b) Jump if not zero     (c) Jump if zero      (d) none

(viii) What is the result of following code and where is it kept?
MOV A, #10 H, MOV R2, #05 H, ADD A, R2
(a) A, 0F H          (b) R2, 0FH               (c) A, 15 H          (d) R2, 15 H

(ix)The total amount of external code memory that can be interfaced to the 8051 is:
(A) 32 K                       (b) 64 K                     (c) 256 K                 (d) 128 K

(x)The Micro-controller 8051 has
(a) 128 bytes of RAM    (b) 64 bytes of RAM    (c) 4 K bytes of RAM    (d) None   

Download.....Test Paper-C 

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